The Australian magpie (Cracticus tibicen) is a medium-sized black and white passerine bird native to Australia and southern New Guinea. It is black and white, but the plumage pattern varies across its range. Its nape, upper tail and shoulder are white in males, grey in females. Across most of Australia, the remainder of the body is black. In the south-east, centre, extreme south-west and Tasmania, the back and rump are entirely white. The eye of adult birds is chestnut brown. Some Australian Magpies can be very aggressive during breeding season and attacks on humans and pets can occur.